In the papers of the Archives of the Institute, two final letters from Hydrotor to the Presidium of the Supreme Council of the National Economy have been preserved (arch. MM 1329 and 1347).

On April 5, having heard reports by V. D. Kirpichnikov and I. I. Radchenko on the progress of Hydrotor's work, the Council of People's Commissars recognized the Hydrotor enterprises as exceptionally productive shock workers. To satisfy Hydrotor's petitions, a special commission was established comprising A. Z. Goldman, A. B. Khalatov, and I. I. Radchenko. Lenin's letter to the Presidium of the Supreme Council of the National Economy was one of the measures directed toward alleviating Hydrotor's situation.